Istanbul to Altstätten: time difference
Altstätten is 1 h behind Istanbul. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇨🇭 Altstätten, Switzerland
51
- Central European Summer Time
- UTC+2
- Night
☀️ 07:48 · 🌙 18:27 · 10 h 39 min
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Istanbul 06:32 6:32 AM Altstätten 05:32 5:32 AM You –:–
06:32 6:32 AM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
05:32 5:32 AM
Central European Summer Time · UTC+2
☀️ 07:48 · 🌙 18:27
·
−1 h
Altstätten is 1 h behind Istanbul.
When you, Istanbul and Altstätten are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇹🇷 Istanbul
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇨🇭 Altstätten
23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇷 Istanbul | 🇨🇭 Altstätten |
|---|---|---|
| Local time | 06:32 | 05:32 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | GMT+03:00 | Central European Summer Time |
| UTC offset | UTC+3 | UTC+2 |
| Offset from Istanbul | — | −1 h |
| IANA zone | Europe/Istanbul | Europe/Zurich |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:21 | 07:48 |
| Sunset | 18:18 | 18:27 |
| Daylight | 10 h 57 min | 10 h 39 min |
| People on this clock | 15,701,602 | 11,145 |
Compare Istanbul with another city
More comparisons with Istanbul: the time zones next to it and the far side of the clock.
Big time differences
Istanbul and Altstätten: common questions
What is the time difference between Istanbul and Altstätten?
Altstätten is 1 hour behind: it uses UTC+2, while Istanbul is on UTC+3.
If it is 9:00 AM in Istanbul, what time is it in Altstätten?
At 9:00 AM in Istanbul, clocks in Altstätten show 8:00 AM.
If it is 6:00 PM in Istanbul, what time is it in Altstätten?
At 6:00 PM in Istanbul, clocks in Altstätten show 5:00 PM.
When do working hours in Istanbul and in Altstätten overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Istanbul, which is 9:00 AM to 5:00 PM in Altstätten.
When does the date change in Altstätten compared with Istanbul?
The new day starts in Altstätten later: until 1:00 AM in Istanbul, it is still the previous day there. From 11:00 PM in Altstätten, Istanbul is already on the next day.
Is the time difference between Istanbul and Altstätten the same all year?
No. Only Altstätten switches to summer time, so the gap changes twice a year. From October 25, 2026, Altstätten will be 2 hours behind Istanbul.
